Finding the Third Proportional to 72,718.50 and 152,059.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,718.50 : 152,059.50 = 152,059.50 : x
2. Step 2: Convert to fraction form
   72,718.50/152,059.50 = 152,059.50/x
3. Step 3: Cross multiply
   72,718.50x = 152,059.50 × 152,059.50
4. Step 4: Simplify right side
   72,718.50x = 23,122,091,540.25
5. Step 5: Solve for x
   x = 23,122,091,540.25/72,718.50
6. Step 6: Final answer
   x = 317,967.11